One dimensional polymers and mesogens incorporating multiple bonds betweenmetal atoms

A synthetic strategy aimed at incorporating metal-metal multiple bonds into one-dimensional polymers and liquid crystals is outlined. Specific example s taken from the use of dimetal tetracarboxylates, where the metals are mol ybdenum and tungsten, are presented. Depending upon the organic linking gro up, the one-dimensional polymers may be conducting or charge-storing, and t he characterization of discrete dimers of "dimers" is used to illustrate th is. The thermotropic and other physicochemical properties of mesogenic M-2( O2CR)(4) compounds can be related to the intermolecular M-2- - -O interacti ons as a; function of M and R.